Gas Sensor Modules
SJH Series
Industrial Grade NDIR CH₄ Sensor SJH Series
- Model
- SJH Series
- Category
- Gas Detectors & Alarms › Gas Sensor Modules
Parameters: CH4
Measurement PrincipleNDIR
Overview
SJH is a miniature industrial dual-beam NDIR methane sensor measuring 0-100% CH4 with 0.01% resolution, full-range temperature compensation, diffusion sampling and simultaneous voltage and serial outputs, used in petrochemical, chemical, coal, medical and laboratory applications.
Key Features
- NDIR technology, with long life and full measurement range
- Internal full range temperature compensation
- Diffusion sampling, stable performance
- High precision, high resolution 0.01%
- Small size and fast response
- Antiseptic
- Easy to install and reduce maintenance
- Compatible with digital and analog voltage signal output
Measured Parameters
| Parameter | Measuring Range |
|---|---|
| CH4 | 0~5 %Vol / 0~100 %Vol |
Specifications
| Principle | NDIR |
|---|---|
| Measurement Gas | CH4 |
| Measurement Range | 0 ~ 5%Vol, 0 ~ 100%Vol |
| Accuracy | 0-1%Vol: ≤±0.06%Vol, / 1%-100%Vol: ≤±6% of reading |
| Resolution | 0.01%vol |
| Response Time | T90<25s |
| Output | UART_TTL (2.5-3.3V) / 0.4-2V DC |
| Working Condition | -40 ~ 70℃, 0~95%RH (non-condensing) |
| Storage Condition | -40 ~ 85℃, 0~95%RH (non-condensing) |
| Power Supply | 3.3～5.5V DC |
| Working Current | 55 ~ 60mA |
| Life Span | 10 years |
| Dimension | Dia20*H19mm or Dia20*H16.6mm |
Applications
- Fire alarms
- Underground pipe networks
- Mine alarms
- Oil and gas recovery
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